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Functions
WE
Configuration
Heating circuit with DHW heating
OFF
Co5 -> Fb13 = ON
DHW priority over HK2
OFF
Co4 -> Fb06 = ON
Heating circuit 3:
During the storage tank charging, the direct heating circuit is switched off. The separate heating
circuit runs in parallel.
Functions
WE
Configuration
Heating circuit with DHW heating
OFF
Co5 -> Fb13 = ON
DHW priority over HK3
OFF
Co4 -> Fb07 = ON
Note!
When the
DHW priority over HK3
function is deactivated, the direct heating circuit also runs in
parallel to the DHW charging. The heating circuit may, however, only be overheated by 10 °C .
In other words, the heating circuit is supplied with not enough heat when the boiler set point for
the heating circuit is greater than Boiler set point for DHW demand. The heating circuit is switched
off during storage tank charging when the Boiler set point for DHW demand is 10 °C higher than
the boiler set point.
7.2
Forced charging of the DHW storage tank
(Anl 1 to 7)
A forced charging of the DHW storage tank can prevent that the safety equipment place the
boiler out of operation in case of excessively high flow temperature.
The forced charging of the DHW storage tank takes place when the
Maximum limit for DHW
forced charging is exceeded at the flow sensor together with sensor VFg or at one of the two
boiler sensors KF1 or KF2.
In systems without their own DHW heating (systems Anl 4 to 7) the demand for a forced charg-
ing is passed on to the connected controllers at binary output BA1. The actual forced charging is
started by the controllers that are responsible for the DHW heating.
Functions
WE
Configuration
Heating circuit with DHW heating
OFF
Co5 -> Fb13 = ON*
Forced charging of DHW storage
tank
OFF
80 °C
Co4 -> Fb02 = ON
Maximum limit f. DHW forced charging/20 to 120 °C
* Not in systems Anl 4 to 7
46
EB 5474 EN
Functions of the DHW circuit
Содержание TROVIS 5474
Страница 79: ...System Anl 3 System Anl 4 EB 5474 EN 79 Electrical connection...
Страница 80: ...System Anl 5 System Anl 6 80 EB 5474 EN Electrical connection...
Страница 127: ...EB 5474 EN 127 Index Key number 1732...
Страница 129: ...EB 5474 EN 129...
Страница 130: ...130 EB 5474 EN...